I own a Cairn Ecrin CD player, the CD transport is a Philips CDM12.1 with a tray loader L1210/11, the laser is dead for sure. The player has a good DAC board and nice power supply board in working conditions. See attached pictures.

I would like to make use of the DAC, the source will be a Logitech Squeezebox Classic or SB3 which has a SPDIF output.

I have no schematic of the CD player. On its DAC board I can see a CS8412 (receiver), a SM5813APT (filter), 2 PCM63P (DAC chips), 2 OPA2604AP (op amp)and transistors for output stage.

I have some knowledge on DAC but not enough to do what I would like to do on this project. Help to get me started on this project will be much appreciated,